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m[−34]+n[4−3]=[10−11]⇒3m+7n=

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a

3

b

5

c

10

d

1

answer is D.

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Detailed Solution

m[−34]+n[4−3]=[10−11] -3m+4n=10; 4m-3n=-11 solving m=-2, n=1 ⇒3m+7n=-6+7=1

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